Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
>> Hi,
>>
> >I have seen one of the document that drbd will support upto 255 devices.
>>
>> I want to know would it be possible to increase this number??
>>
>Yes
>> I would be appreciated for your quick response.
>>
>Quick, and short :)
Could you guide me how it can be acheived and what is the maximum number of
devices can be supported?
Thanks,
Siva
On Wed, Mar 16, 2011 at 4:30 PM, <drbd-user-request at lists.linbit.com> wrote:
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> When replying, please edit your Subject line so it is more specific
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> Today's Topics:
>
> 1. Re: communication constantly terminated, always re-syncing
> (Lars Ellenberg)
> 2. Re: Pause Verify ? (Lars Ellenberg)
> 3. Fix Fragmentation on an ext3 filesystem on DRBD? (Robinson, Eric)
> 4. Re: DRBD for 1 TB of data (Robinson, Eric)
> 5. Re: Fix Fragmentation on an ext3 filesystem on DRBD? (Ed Groth)
> 6. Maximum number of drbd devices supported? (siva subramani)
> 7. Re: Maximum number of drbd devices supported? (Philipp Reisner)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Tue, 15 Mar 2011 17:04:03 +0100
> From: Lars Ellenberg <lars.ellenberg at linbit.com>
> Subject: Re: [DRBD-user] communication constantly terminated, always
> re-syncing
> To: drbd-user at lists.linbit.com
> Message-ID: <20110315160403.GF11932 at barkeeper1-xen.linbit>
> Content-Type: text/plain; charset=us-ascii
>
> On Fri, Mar 11, 2011 at 10:16:19AM -0500, Cory Coager wrote:
> > On 03/04/2011 09:42 AM, Lars Ellenberg wrote:
> > >I wrote: my best guess is your NIC hardware is broken. These logs are
> > >more complete than what you posted before, though, so you _may_
> > >just have a pathologicall case of data buffers modified in flight.
> > I haven't upgraded drbd yet but I did replace the NIC's in both
> > machines. Unfortunately it didn't resolve the issue, I still see
> > errors all day long.
> >
> > If I am a victim of data buffers modified in flight, is there any
> > fix for this? I read through your links and it seems like they have
> > a custom kernel patch that is untested. Is there any work around
> > besides this?
>
> As mentioned in the several times referenced thread
> http://www.mail-archive.com/drbd-user@lists.linbit.com/msg03373.html:
> ...
> If you don't want to know about [data integrity digest mismatches],
> disable that check.
> If the replication link interruptions caused by that check
> are bad for your setup (particularly so in dual primary setups),
> disable that check.
> ...
>
> So, maybe you want to disable that check?
>
> ;-)
>
>
> --
> : Lars Ellenberg
> : LINBIT | Your Way to High Availability
> : DRBD/HA support and consulting http://www.linbit.com
>
>
> ------------------------------
>
> Message: 2
> Date: Tue, 15 Mar 2011 17:08:21 +0100
> From: Lars Ellenberg <lars.ellenberg at linbit.com>
> Subject: Re: [DRBD-user] Pause Verify ?
> To: drbd-user at lists.linbit.com
> Message-ID: <20110315160821.GG11932 at barkeeper1-xen.linbit>
> Content-Type: text/plain; charset=us-ascii
>
> On Fri, Mar 04, 2011 at 12:19:41PM +0100, netz-haut - stephan seitz wrote:
> > Hi,
> >
> > I didn't find any documentation about this, but I wonder if it is somehow
> possible to pause/continue a drbdadm verify?
>
> Disconnect will "interrupt" it. The next verify after the next connect
> "should" usually start from where the last one left off.
>
> Other than that, you can only throttle the rate at which it tries to do
> the verify. Rate settings for verify are the same as for resync, so
> syncer { rate, c-min-rate, c-max-rate, c-plan-ahead ... }.
>
> --
> : Lars Ellenberg
> : LINBIT | Your Way to High Availability
> : DRBD/HA support and consulting http://www.linbit.com
>
>
> ------------------------------
>
> Message: 3
> Date: Tue, 15 Mar 2011 11:28:52 -0700
> From: "Robinson, Eric" <eric.robinson at psmnv.com>
> Subject: [DRBD-user] Fix Fragmentation on an ext3 filesystem on DRBD?
> To: <drbd-user at lists.linbit.com>
> Message-ID:
> <768FEA3F936926468F594E3CA7741FE802C73E99 at ipa-vault.nvipa.com>
> Content-Type: text/plain; charset="us-ascii"
>
> I know most people say ext3 does not fragment, but that it not quite
> true. Linux is better than Windows, but not perfect. It does fragment. I
> have a system hosting multiple instances of MySQL with maybe 100
> separate databases, all of which are being inserted throughout the day.
> My iowaits have steadily increased over time and I believe some of it is
> due to fragmentation. The real questions are (1) what is the best way to
> fix it, and (2) are there any possible repercussions to defragmenting a
> filesystem that rides on a DRBD device? I assume the answer to the
> second question is no. Does anyone have thoughts on the first question?
> What if we just copy all of the data off of the filesystem, rm -rf it,
> and then copy it back in? Or should we try to use some kind of ext3
> defragmenter?
>
>
> --
> Eric Robinson
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
> Disclaimer - March 15, 2011
> This email and any files transmitted with it are confidential and intended
> solely for drbd-user at lists.linbit.com. If you are not the named addressee
> you should not disseminate, distribute, copy or alter this email. Any views
> or opinions presented in this email are solely those of the author and might
> not represent those of Physicians' Managed Care or Physician Select
> Management. Warning: Although Physicians' Managed Care or Physician Select
> Management has taken reasonable precautions to ensure no viruses are present
> in this email, the company cannot accept responsibility for any loss or
> damage arising from the use of this email or attachments.
> This disclaimer was added by Policy Patrol: http://www.policypatrol.com/
> -------------- next part --------------
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> ------------------------------
>
> Message: 4
> Date: Tue, 15 Mar 2011 14:58:49 -0700
> From: "Robinson, Eric" <eric.robinson at psmnv.com>
> Subject: Re: [DRBD-user] DRBD for 1 TB of data
> To: "Ben" <ben.wxc at gmail.com>, "Geetha Thanu" <thanu.geetha at gmail.com>
> Cc: drbd-user at lists.linbit.com
> Message-ID:
> <768FEA3F936926468F594E3CA7741FE802C73EFE at ipa-vault.nvipa.com>
> Content-Type: text/plain; charset="us-ascii"
>
> I sure hope it works. We're using DRBD 8.3.2 and we already have 1.4TB
> of data on our DRBD device. :-)
>
> --
> Eric Robinson
>
>
>
>
>
>
>
>
>
>
>
>
>
>
> Disclaimer - March 15, 2011
> This email and any files transmitted with it are confidential and intended
> solely for Ben,Geetha Thanu,drbd-user at lists.linbit.com. If you are not the
> named addressee you should not disseminate, distribute, copy or alter this
> email. Any views or opinions presented in this email are solely those of the
> author and might not represent those of Physicians' Managed Care or
> Physician Select Management. Warning: Although Physicians' Managed Care or
> Physician Select Management has taken reasonable precautions to ensure no
> viruses are present in this email, the company cannot accept responsibility
> for any loss or damage arising from the use of this email or attachments.
> This disclaimer was added by Policy Patrol: http://www.policypatrol.com/
>
>
> ------------------------------
>
> Message: 5
> Date: Tue, 15 Mar 2011 15:06:54 -0700
> From: Ed Groth <ed at boxpopuli.com>
> Subject: Re: [DRBD-user] Fix Fragmentation on an ext3 filesystem on
> DRBD?
> To: "Robinson, Eric" <eric.robinson at psmnv.com>
> Cc: drbd-user at lists.linbit.com
> Message-ID:
> <AANLkTikBpYoyJgeyiDbmovRE3fFczMJn5Lu-hO5DvT2v at mail.gmail.com>
> Content-Type: text/plain; charset=ISO-8859-1
>
> Yep, using Tar to backup and restore is the most common way to
> defragment a Unix filesystem.
>
> If there's space you can create the tar archive on the filesystem itself.
>
> Ed
>
> On Tue, Mar 15, 2011 at 11:28 AM, Robinson, Eric
> <eric.robinson at psmnv.com> wrote:
> > I know most people say ext3 does not fragment, but that it not quite
> true.
> > Linux is better than Windows, but not perfect. It does fragment. I have a
> > system hosting multiple instances of MySQL with maybe 100 separate
> > databases, all of which are being inserted throughout the day. My iowaits
> > have steadily increased over time and I believe some of it is due to
> > fragmentation. The real questions?are (1) what is the best way to fix it,
> > and (2) are there any possible repercussions to defragmenting a
> filesystem
> > that rides on a DRBD device? I assume the answer to the second question
> is
> > no. Does anyone have thoughts on the first question? What if we just copy
> > all of the data off of the filesystem, rm -rf it, and then copy it back
> in?
> > Or should we try to use some kind of ext3 defragmenter?
> >
> >
> > --
> > Eric Robinson
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> > Disclaimer - March 15, 2011
> >
> > This email and any files transmitted with it are confidential and
> intended
> > solely for drbd-user at lists.linbit.com. If you are not the named
> addressee
> > you should not disseminate, distribute, copy or alter this email. Any
> views
> > or opinions presented in this email are solely those of the author and
> might
> > not represent those of Physicians' Managed Care or Physician Select
> > Management. Warning: Although Physicians' Managed Care or Physician
> Select
> > Management has taken reasonable precautions to ensure no viruses are
> present
> > in this email, the company cannot accept responsibility for any loss or
> > damage arising from the use of this email or attachments.
> > _______________________________________________
> > drbd-user mailing list
> > drbd-user at lists.linbit.com
> > http://lists.linbit.com/mailman/listinfo/drbd-user
> >
> >
>
>
> ------------------------------
>
> Message: 6
> Date: Wed, 16 Mar 2011 07:23:57 +0530
> From: siva subramani <siva.kernel at gmail.com>
> Subject: [DRBD-user] Maximum number of drbd devices supported?
> To: drbd-user at lists.linbit.com
> Message-ID:
> <AANLkTi=BEjindy9EBmd3bUBV-Vye8NYPXjdUVCSt9seH at mail.gmail.com>
> Content-Type: text/plain; charset="iso-8859-1"
>
> Hi,
>
> I have seen one of the document that drbd will support upto 255 devices.
>
> I want to know would it be possible to increase this number??
>
> I would be appreciated for your quick response.
>
> Regards,
> Siva
> -------------- next part --------------
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> ------------------------------
>
> Message: 7
> Date: Wed, 16 Mar 2011 10:34:10 +0100
> From: Philipp Reisner <philipp.reisner at linbit.com>
> Subject: Re: [DRBD-user] Maximum number of drbd devices supported?
> To: drbd-user at lists.linbit.com
> Message-ID: <201103161034.10854.philipp.reisner at linbit.com>
> Content-Type: Text/Plain; charset="iso-8859-15"
>
> Am Mittwoch, 16. M?rz 2011, um 02:53:57 schrieb siva subramani:
> > Hi,
> >
> > I have seen one of the document that drbd will support upto 255 devices.
> >
> > I want to know would it be possible to increase this number??
> >
>
> Yes
>
> > I would be appreciated for your quick response.
> >
>
> Quick, and short :)
>
> Best,
> Phil
> --
> : Dipl-Ing Philipp Reisner
> : LINBIT | Your Way to High Availability
> : Tel: +43-1-8178292-50, Fax: +43-1-8178292-82
> : http://www.linbit.com
>
> DRBD(R) and LINBIT(R) are registered trademarks of LINBIT, Austria.
>
>
> ------------------------------
>
> _______________________________________________
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>
> End of drbd-user Digest, Vol 80, Issue 23
> *****************************************
>
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